US3557548A - Waterproof case for watch - Google Patents

Waterproof case for watch Download PDF

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Publication number
US3557548A
US3557548A US754015A US3557548DA US3557548A US 3557548 A US3557548 A US 3557548A US 754015 A US754015 A US 754015A US 3557548D A US3557548D A US 3557548DA US 3557548 A US3557548 A US 3557548A
Authority
US
United States
Prior art keywords
movement
ring
case
watch
back cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US754015A
Other languages
English (en)
Inventor
Yoshiaki Fujimori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suwa Seikosha KK
Original Assignee
Suwa Seikosha KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suwa Seikosha KK filed Critical Suwa Seikosha KK
Application granted granted Critical
Publication of US3557548A publication Critical patent/US3557548A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/08—Hermetic sealing of openings, joints, passages or slits
    • G04B37/11—Hermetic sealing of openings, joints, passages or slits of the back cover of pocket or wrist watches
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/04—Mounting the clockwork in the case; Shock absorbing mountings
    • G04B37/05—Fixed mountings for pocket or wrist watches

Definitions

  • FIG. 1 is a cross-section showing a conventional type of waterproof case for a watch
  • FIGS. 2, 3 and 4 are cross-sections showing one embodiment of the invention by way of example.
  • FIG. 5 is a cross-section of another embodiment of the invention.
  • the present invention relates to a movement fixing means for waterproof watch case.
  • the movement 1 is screwed to the casing ring 5 with the case screw 4, said casing ring being fixed by the face 6 of the back cover 2 and by the face 7 of the case body 3.
  • This construction necessitates using the case screw 4.
  • the diameter of the screw head is limited in its size owing to the limited space of the movement 1. As all the weight of the movement rests on this small screw, the screw easily breaks or comes off. Therefore, it is difiicult to keep the movement in place for a long time.
  • the present invention seeks to eliminate the above defect.
  • the object of the present invention is to provide a permanent movement fixing means to the case body without using the case screw in the waterproof watch case.
  • a collar 8, having an upper face 9 for engaging the annular ring 11 and a lower face 10 for engaging the annular casing ring 5, are provided on the outer periphery of the movement 1.
  • the face 6 of the back cover 2 thrusts up the casing ring 5 to push the collar 8 on the outer periphery of the movement 1, thereby the annular ring 11 is pushed to be fixed by the abutment of face 7 of the case body 3.
  • the back cover 2 abuts against gasket 13 to get a waterproof seal.
  • Gaps 13, 14 allow casing ring 5, alone, to align the movement, within the case body 3. Without these gaps, the dimensions of ring 7, movement 1, and in case 3 would have to be made to very close tolerances so that the movement would align not only ring 5, but also in ring 11 and case body 3.
  • annular ring 11 and the casing ring 5 engage with the upper and lower part of the collar 8 provided on the outer periphery of the movement 1 respectively.
  • the waterproof gasket 12 is interposed between the annular casing ring 5 and the face 6 of the back cover 2. When the back cover is attached, the face 6 of the back cover 2 pushes the gasket 12 to thrust up the annular casing ring 5, thus the movement is fixed.
  • the case according to the invention is constructed in such a way that the collar 8 of the movement 1 is interposed between the ring 11 and the casing ring 5 to fix them directly or indirectly between the face 7 of the case body 3 and the face 6 of the back cover 2.
  • No case screw is necessary, which eliminates the play between the case and the movement due to loosening or breakage of screw, thus the movement can be fixed permanently.
  • Fixing means for mounting a watch movement within a casing comprising: a casing rim having an inner abutment; a first ring disposed within said casing rim engaging the underside of said abutment; a second ring disposed Within the casing rim beneath and spaced from the underside of said first ring; a watch movement having a collar disposed in a space between said first and second rings and held between said first and second rings, said collar having a greater outer dimension than the inner diameters of both said rings; and a back cover removably secured to said casing rim supporting the second ring; whereby the back cover secures said second ring and said first and second rings secure the collar of said movement.
  • said back cover comprises snap means for securing said back cover to said casing rim and further comprising a gasket interposed between said back cover, said casing rim and second ring, whereby a waterproof seal is obtained.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
US754015A 1967-08-22 1968-08-20 Waterproof case for watch Expired - Lifetime US3557548A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1967071746U JPS4526137Y1 (fr) 1967-08-22 1967-08-22

Publications (1)

Publication Number Publication Date
US3557548A true US3557548A (en) 1971-01-26

Family

ID=13469381

Family Applications (1)

Application Number Title Priority Date Filing Date
US754015A Expired - Lifetime US3557548A (en) 1967-08-22 1968-08-20 Waterproof case for watch

Country Status (4)

Country Link
US (1) US3557548A (fr)
JP (1) JPS4526137Y1 (fr)
CH (2) CH1161268A4 (fr)
GB (1) GB1194640A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130051201A1 (en) * 2011-08-31 2013-02-28 Seiko Epson Corporation Timepiece

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602008000134D1 (de) 2007-03-16 2009-10-22 Richemont Int Sa Uhr und Einsetzverfahren
EP3968099B1 (fr) * 2020-09-15 2024-10-30 Omega SA Systeme de fixation d'un mouvement d'horlogerie dans une boite de montre
EP4707951A1 (fr) * 2024-09-04 2026-03-11 Certina SA Pièce d'horlogerie à emboîtage rigide et procédé d'emboîtage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130051201A1 (en) * 2011-08-31 2013-02-28 Seiko Epson Corporation Timepiece
US9176481B2 (en) * 2011-08-31 2015-11-03 Seiko Epson Corporation Timepiece

Also Published As

Publication number Publication date
CH564802B5 (fr) 1975-07-31
JPS4526137Y1 (fr) 1970-10-12
GB1194640A (en) 1970-06-10
CH1161268A4 (fr) 1972-03-30

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